refactor: Remove code suggestion model configuration

refactor: Remove code suggestion model configuration

Main issue: https://gitlab.com/gitlab-org/modelops/applied-ml/ai-assist/ai-assist-api/-/issues/10

Screenshots

Before	After

Manual test

Code completion works fine in VsCode development mode

console.log("hello");

// create a react functional component
const Hello = () => {
  const { hello } = useState("World"); // useState will create a stateful component
  return (
    <p>
      Hello, {hello}
    </p>
  );
};